Frame-plate for car-trucks



('No Model.)

B. BAGSHAWB.

FRAME PLATE POB. GAR TRUCKSn No. 55L523. Patented Deo. 17, 1895.

.725.1 39.3. 35W. 72W jg.

UNITED STATES PATENT OFFICE.

BERNAL BAGSI'IAW'E, OF IIEADINGLY, ENGLAND, ASSIGNOR TO THE FOX SOLIDPRESSED STEEL COMPANY, OF CHICAGO, ILLINOIS.

FRAME-PLATE CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent No. 551,523, dated December17, 1895.

Application filed February 13, 1894. Serial No. 500,004. (No modell) Toall whom it may con/cern:

Beit known that I, BERNAL BAesHAWn, of Iileadingly, Leeds, York county,England, have invented a nenT and useful Improvement in the Constructionof Frame-Plates for Car- Sills, of which the following is a full, true,and exact description, reference being had to the accompanying drawings.

This invention relates to an improvement in channel-plates which areespecially adapted for use in the construction of the under fra-nies andsills for car-trucks.

My invention will be readily understood from the accompanying drawings,in Whichn Figure l is a cross-sectional vieur of one form of myimprovement, and Figs. 2, 3, 4, 5, 6, 7, 8, 9 and 10 are similar viewsof modifications.

My invention coinpi'sises a channel-bar in which one or both of theparallel members or flanges has a thickness greater than the main memberorsection. This increased thickness is attained in several Ways-wt. e.yby making the inner face of one of the flanges C inclined slightlytoward the central section A', so that the flange will extend inwardlyin Width to Ward its outer edge, as shown in Fig. l; or as in Fig. 3 bymaking the outer face of one iiange C3 inclined slightly away from thecentral section A3, so that the fiange will gradually expand outwardlyin Width from the central member; or, as illustrated in Fig. 5, bothfaces of one fiange C5 may be made to taper away from the center of theflange; or, as shown in Fig. '7, one face of the flange C7 may be ofuniform increased thickness, the portion Dfr connecting the flange tothe central section being only of the normal thickness of the plate; or,as shown in Fig. 9, one face of the flange CJ may be of uniformincreased thickness, the flangebeing connected to the central section ofthe plate by a portion D, gradually decreasing from the thickness of theflange to the thickness of the central section A9.

In Figs. l, 3, 5, 7, and 9, only one of the flanges is shown asthickened, but if found necessary or desirable both may be thickened inthe same way, as illustrated in Figs. 2, 4, G, 8, and l0.

The thickened flange is of course that one which When built into astructure must bear the greatest strain. Thus when the lower flange of achannel-bar is to be used as the tension member of the structure, ofwhich it forms a part, suoli flange should be made of greater thicknessthan the rest of the bar. This form of channel-plate possesses thisadvantage over those of uniform thickness. In structures such asfreight-car trucks Where great strength of flange is required, suchstrength is obtainable by this thickening, instead of Widening theflange so that the same sectional area is obtained in more compact form.Interference of extended iianges with other parts of the truck-frame isavoided and the channel-bars rendered more convenient in form fortransportation.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. A channel-bar, having a central section and top andbottom flanges,one of the nanges being thickened and connected with the central sectionby a portion which for a part of its length is of substantially thesaine thickness as the central section, substantially as specied.

2. A channel-bar, having a central section and top andbottom iianges,one of the flanges being of tapering cross-section and connected withthe central section by a portion which for a part of its length is of'substantially the saine thickness as the central section, substantiallyas specied.

3. A rolled steel channel for the construe tion of car truck frames,havinga central section and topl and bottom iianges, one of the ang'esbeing thickened and connected with the central section by a portionwhich for a part of its length is of substantially the same thickness asthe central section, substantially as specified.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing Witnesses.

BERNAL BAGSIIAIVFJ.

Witnesses:

H. S. HEPWORTH, ALEX. L. Gnome

